Project Poltergeist

Programmes

• Moon Machines
• In the Shadow of the Moon
• The Underwater Dream Machine
• Nuclear Nightmares
• Hitler's Sunken Secret
• Global Dimming
• Project Poltergeist
• Magnetic Flip
• The Secret of El Dorado
• Rocket Men of Mission 105
• The Day the Oceans Boiled
• Hunt for the Death Star
• The Great Dog Race
• Einstein's Biggest Blunder

First transmitted on BBC2 / Horizon, March 2004; transmitted as ‘The Ghost Particle’ on WGBH/NOVA in February 2006

The search for the neutrino, the Universe’s most elusive ingredient

Forty years ago Ray Davis and John Bahcall tunnelled deep into the Earth to build a trap for the most elusive particle in Nature – the neutrino. It was an experiment which few thought could ever succeed, and it produced a result which no one believed. But for decades Davis and Bahcall refused to give up – convinced that they were on to something important. This is the story of how their experiment led to an astonishing discovery which is making scientists re-think their most fundamental theories of what the Universe is made of, and where it all came from.